could fluff
Regular verb: fluff - fluffed- fluffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fluff
you could fluff
she could fluff
we could fluff
you could fluff
they could fluff 	I could be fluffing
you could be fluffing
she could be fluffing
we could be fluffing
you could be fluffing
they could be fluffing	I could have fluffed
you could have fluffed
she could have fluffed
we could have fluffed
you could have fluffed
they could have fluffed	I could have been fluffing
you could have been fluffing
she could have been fluffing
we could have been fluffing
you could have been fluffing
they could have been fluffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't fluff
you couldn't fluff
she couldn't fluff
we couldn't fluff
you couldn't fluff
they couldn't fluff 	I couldn't be fluffing
you couldn't be fluffing
she couldn't be fluffing
we couldn't be fluffing
you couldn't be fluffing
they couldn't be fluffing	I couldn't have fluffed
you couldn't have fluffed
she couldn't have fluffed
we couldn't have fluffed
you couldn't have fluffed
they couldn't have fluffed	I couldn't have been fluffing
you couldn't have been fluffing
she couldn't have been fluffing
we couldn't have been fluffing
you couldn't have been fluffing
they couldn't have been fluffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fluff?
could you fluff?
could she fluff?
could we fluff?
could you fluff?
could they fluff? 	could I be fluffing?
could you be fluffing?
could she be fluffing?
could we be fluffing?
could you be fluffing?
could they be fluffing? 	could I have fluffed?
could you have fluffed?
could she have fluffed?
could we have fluffed?
could you have fluffed?
could they have fluffed? 	could I have been fluffing?
could you have been fluffing?
could she have been fluffing?
could we have been fluffing?
could you have been fluffing?
could they have been fluffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I fluff?
couldn't you fluff?
couldn't she fluff?
couldn't we fluff?
couldn't you fluff?
couldn't they fluff? 	couldn't I be fluffing?
couldn't you be fluffing?
couldn't she be fluffing?
couldn't we be fluffing?
couldn't you be fluffing?
couldn't they be fluffing? 	couldn't I have fluffed?
couldn't you have fluffed?
couldn't she have fluffed?
couldn't we have fluffed?
couldn't you have fluffed?
couldn't they have fluffed? 	couldn't I have been fluffing?
couldn't you have been fluffing?
couldn't she have been fluffing?
couldn't we have been fluffing?
couldn't you have been fluffing?
couldn't they have been fluffing?